The procedure to activate rtl8150 on linux is as follows:

  step 1: compile:
	   gcc -DMODULE -D__KERNEL__ -c rtl8150.c -I%DIR%/include
	   note: %DIR% is the directory of the kernel source code which is accompanied with
	         the current kernel of your system. Normally it is located in /usr/src/linux.

  step 2: insert the driver as module:
           insmod rtl8150.o        
           (run 'lsmod' to see if the module is inserted)

  step 3: bind your card to an IP address:

           /sbin/ifconfig eth0 ${IPADDR} netmask ${NETMASK} broadcast ${BROADCAST} 
           (run 'netstat -i' to see if there is a interface 'eth0')

  step 4: add your card to IP routing table and add gateway:
	   /sbin/route add default gw ${GATEWAY} dev eth0


*make sure that your kernel is version 2.4.0 above. Otherwise, you have to 
	upgrade your kernel.